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1、BRITISH STANDARD BS EN ISO 8655-5:2002 Piston-operated volumetric apparatus Part 5: Dispensers The European Standard EN ISO 8655-5:2002 has the status of a British Standard ICS 17.060 ? Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 06:42:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN I
2、SO 8655-5:2002 This British Standard, having been prepared under the direction of the Materials and Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 22 October 2002 BSI 22 October 2002 ISBN 0 580 40612 1 National fore
3、word This British Standard is the official English language version of EN ISO 8655-5:2002. It is identical with ISO 8655-5:2002. It, together with Parts 2, 3 and 4 of BS EN ISO 8655:2002, supersedes BS 7653-2:1993 which is withdrawn. The UK participation in its preparation was entrusted by Technical
4、 Committee LBI/36, Laboratory glassware and related apparatus, to Subcommittee LBI/36/1, General and volumetric, glass and plastics apparatus, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The B
5、ritish Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards
6、Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the respo
7、nsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cov
8、er, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 5, the Annex ZA page, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publica
9、tion Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 06:42:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8655-5 September 2002 ICS 17.060 English version Piston-operated volumetric apparatus - Part 5: Dispensers (I
10、SO 8655-5:2002) Appareils volumtriques piston - Partie 5: Dispenseurs (ISO 8655-5:2002) Volumenmessgerte mit Hubkolben - Teil 5: Dispenser (ISO 8655-5:2002) This European Standard was approved by CEN on 13 July 2002. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which sti
11、pulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard ex
12、ists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bod
13、ies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR N
14、ORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2002 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8655-5:2002 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 06:42:25 GMT+00:00 2006, Uncontrolled Copy,
15、(c) BSI Foreword This document (ISO 8655-5:2002) has been prepared by Technical Committee ISO/TC 48 “Laboratory glassware and related apparatus“ in collaboration with Technical Committee CEN/TC 332 “Laboratory equipment“, the secretariat of which is held by DIN. This European Standard shall be given
16、 the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2003, and conflicting national standards shall be withdrawn at the latest by March 2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of
17、 the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The te
18、xt of the International Standard ISO 8655-5:2002 has been approved by CEN as a European Standard without any modifications. NOTE Normative references to International Standards are listed in Annex ZA (normative). EN ISO 86555:2002 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 06:42:25 GMT+0
19、0:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD ISO 8655-5 First edition 2002-09-15 Reference number ISO 8655-5:2002(E) Piston-operated volumetric apparatus Part 5: Dispensers Appareils volumtriques piston Partie 5: Dispenseurs EN ISO 86555:2002 Licensed Copy: sheffieldun sheffieldun, n
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24、gnirmo ietI rehSO ta tserdda eheb slow or SIsO memreb ydob in toc ehtnury fo tr ehtseuqeer. ISO copyrithg fofiec tsop esaCela 65 G 1121-HCeneva 02 T.le + 22 14 10 947 11 Fxa + 14 47 2290 9 74 E-liam cpoyrigthsio.ch Web wwwsi.oc.h EN ISO 86555:2002 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov
25、18 06:42:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page 1Scope . 1 2Normative references . 1 3Terms and definitions 1 4Principle of operation 1 5Adjustment 2 6Metrological performance requirements . 2 7User information . 4 8Marking . 4 Bibliography. 5 EN ISO 86555:2002 Licensed Copy
26、: sheffieldun sheffieldun, na, Sat Nov 18 06:42:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally car
27、ried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
28、 ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical comm
29、ittees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 8655 may be the subject of patent rights. ISO sh
30、all not be held responsible for identifying any or all such patent rights. International Standard ISO 8655-5 was prepared by Technical Committee ISO/TC 48, Laboratory glassware and related apparatus, Subcommittee SC 1, Volumetric instruments. ISO 8655 consists of the following parts, under the gener
31、al title Piston-operated volumetric apparatus: Part 1: Terminology, general requirements and user recommendations Part 2: Piston pipettes Part 3: Piston burettes Part 4: Dilutors Part 5: Dispensers Part 6: Gravimetric methods for the determination of measurement error The following part is under pre
32、paration: Part 7: Non-gravimetric methods for the determination of measurement error EN ISO 86555:2002 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 06:42:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI v Introduction ISO 8655 addresses the needs of: suppliers, as a basis for quality control
33、including, where appropriate, the issuance of suppliers declarations; test houses and other bodies, as a basis for independent certification; users of the equipment, to enable routine checking of accuracy. The tests specified should be carried out by trained personnel. EN ISO 86555:2002 Licensed Cop
34、y: sheffieldun sheffieldun, na, Sat Nov 18 06:42:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 06:42:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ANRETNIITOTS LANDNADRAOSI -55682002:5)E( 1 Piston-operated volumetric apparatus Part 5: Dispensers
35、 1Scope This part of ISO 8655 specifies metrological requirements, maximum permissible errors, requirements for marking and information to be provided for users for dispensers. It is applicable to dispensers with nominal volumes from up to , designed to deliver their volume (Ex). NOTEGeneral require
36、ments and definitions of terms for piston-operated volumetric apparatus are given in ISO 8655-1. Conformity testing (type evaluation) of piston-operated volumetric apparatus is given in ISO 8655-6. Alternative test methods such as photometric and titrimetric methods will be the subject of a future P
37、art 7 to ISO 8655. For all other tests (e.g. quality assurance by the supplier, analytical and measuring equipment quality assurance by the user) see ISO 8655-6 or alternative test methods. For safety requirements of electrically powered dispensers, see IEC 61010-1. 2Normative references The followi
38、ng normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 8655. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 8655 are
39、encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. I
40、SO 3696, Water for analytical laboratory use Specification and test methods ISO 8655-1:2002, Piston-operated volumetric apparatus Part 1: Terminology, general requirements and user recommendations ISO 8655-6:2002, Piston-operated volumetric apparatus Part 6: Gravimetric methods for the determination
41、 of measurement error 3Terms and definitions For the purposes of this part of ISO 8655, the terms and definitions given in 8655-1 apply. 1l200 ml EN ISO 86555:2002 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 06:42:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 4Principle of operation Dis
42、pensers are used for the accurate repetitive delivery (dispensing) of preset liquid volumes. They are of two types: single-stroke dispensers providing a single delivery from each filling stroke; multiple-delivery dispensers or ratchet-based systems providing multiple deliveries from each filling str
43、oke. The piston can be operated manually, electrically, pneumatically or hydraulically. Drive mechanism, piston and cylinder can be a single unit or can be separable by simple hand actions, so that different pistons and cylinders (change-over units) can be used with the same drive mechanism. During
44、operation, the aspiration tube dips into the reservoir containing the fluid to be dispensed. After the system has been primed with fluid, assuring that it is free of any air, the piston aspirates fluid by moving in one direction and delivers the fluid to be measured by moving in the opposite directi
45、on. Dispensers can be constructed with or without valves. The metrological characteristics of dispensers are dependent on, among other things, the material and workmanship of the aspiration and delivery tubing used. The supplier shall therefore deliver the necessary tubing with the dispenser or sugg
46、est or state the characteristics the tubing shall have in order to meet the metrological demands placed on the system. 5Adjustment 5.1A dispenser shall be adjusted by its supplier for the delivery (Ex) of its volume and for the standard reference temperature of using grade 3 water as specified in IS
47、O 3696. 5.2If dispensers are designed to have their factory-preset adjustment altered by the user, the design shall prevent unintentional readjustment. If the user readjusts the dispenser, it shall be clearly and unequivocally indicated on the outside of the dispenser that readjustment has been effe
48、cted, for example by means of a mark, a broken seal, or a label affixed by the user. 5.3Type testing of the adjustment shall satisfy the performance requirements specified in clause 6 when the dispenser is tested in accordance with ISO 8655-6. 6Metrological performance requirements The conformity te
49、st (type evaluation) specified in ISO 8655-6 evaluates the total system of the dispenser comprising the drive and, if applicable, the change-over unit (see clause 4) including aspiration and delivery tubing. The conformity test is carried out in accordance with ISO 8655-6 by the supplier prior to the issuance of a suppliers declaration of conformity, or a test house or other authorized body prior to the issuance of a certificate of co